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Artyfechinostomum malayanum: Metacercariae Encysted in Pila sp. Snails Purchased from Phnom Penh, Cambodia

Authors
 Woon-Mok Sohn  ;  Tai-Soon Yong  ;  Keeseon S Eom  ;  Muth Sinuon  ;  Hoo-Gn Jeoung  ;  Jong-Yil Chai 
Citation
 KOREAN JOURNAL OF PARASITOLOGY, Vol.55(3) : 341-345, 2017-06 
Journal Title
KOREAN JOURNAL OF PARASITOLOGY
ISSN
 0023-4001 
Issue Date
2017-06
MeSH
Animals ; Cambodia ; Cricetinae ; Intestine, Small / parasitology ; Life Cycle Stages ; Metacercariae / anatomy & histology ; Metacercariae / isolation & purification* ; Metacercariae / ultrastructure ; Mice ; Microscopy, Electron, Scanning ; Parasite Encystment* ; Rats ; Snails / parasitology* ; Trematoda / anatomy & histology ; Trematoda / growth & development ; Trematoda / isolation & purification* ; Trematoda / ultrastructure
Keywords
Artyfechinostomum malayanum ; Cambodia ; Pila sp. snail ; adult fluke ; echinostome ; metacercaria ; scanning electron microscopy
Abstract
The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145-165 μm in diameter, having a cyst wall of 6-10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope. They were plump or elongated, ventrally curved, 6.0-8.1×1.6-2.0 mm in size, and characterized by the head collar bearing 43 collar spines, including 5 end group ones on each side, a long cirrus sac extending beyond the posterior margin of the ventral sucker, a submedian ovary, and 2 deeply lobed testes. Eggs in uteri were operculate, ovoid to ellipsoid, and 120-135×68-75 μm in size. In scanning electron microscopy, the head collar was prominent with collar spines looking like horns. Scale-like tegumental spines were densely distributed on the ventral surface between the head collar and ventral sucker. Sensory papillae were distributed mainly on the tegument around suckers. By this study, it has been first confirmed that the life cycle of A. malayanum exists in Cambodia.
Files in This Item:
T992017127.pdf Download
DOI
10.3347/kjp.2017.55.3.341
Appears in Collections:
1. College of Medicine (의과대학) > Others (기타) > 1. Journal Papers
Yonsei Authors
Yong, Tai Soon(용태순) ORCID logo https://orcid.org/0000-0002-3445-0769
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/195816
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